Time equipment with time zone mechanism

ABSTRACT

A time equipment with time zone mechanism includes a 24-hour dial, an hour hand and a minute hand mounted for rotating above said dial, a movement for driving said hour hand and minute hand to rotate one revolution per 24 hours, a time zone mechanism, and a setting mechanism for said time zone mechanism. The time zone mechanism comprises a time zone disc coaxially mounted under the dial and a driving device for driving the time zone disc to rotate one revolution per 24 hours. The time zone disc has an outer time zone ring portion disposed around the periphery of the dial and provided until a plurality of time zone city indicators arranged in the same order as the time zones. The setting mechanism is adapted to drive the time zone disc to rotate independently with one of the time zone city indicators representing a desired city of the time zones aligned with the hour hand, so that the current time of other time zone cities provided on the time zone disc can be read simultaneously coincident with the corresponding hour numerals inscribed on the dial respectively.

BACKGROUND OF THE PRESENT INVENTION

The present invention relates to time equipment such as watch and clock,and more particularly to a time equipment with time zone mechanism whichhas a time zone disc being driven to rotate automatically one revolutionper 24 hours so as to enable one of the time zone city marks whichrepresents the local city rotating simultaneously and following therotation of an hour hand of the time equipment. Furthermore, the timezone city marks of the time zone disc are capable of maintaining inupright position during the rotation of the time zone disc so as tofacilitate the reading of the time zone city marks corresponding withthe hour inscriptions on the dial.

Providing, a time zone ring, which has a plurality of city inscriptionsthereon to incorporate with a 24-hour timepiece for enabling theindication of simultaneous time display for two time zones is a wellknown skill per se for conventional timepiece.

As shown in FIG. 1, a conventional 24-hour timepiece 1 with an exteriortime zone ring 11 mounted on an outer rim 12 of the timepiece 1 in theusual manner is illustrated. When the user needs to observe the time ofanother time zone city other than the local time pointing by an hourhand 13, the user has to hand turn the exterior time zone ring 11 untilthe local city name corresponding to an hour hand point 131 so that theuser can read the current time of another city from a dial 14 coincidentwith the city name on the time zone ring 11. Since the user has torotate the time zone ring 11 every time when the user needs to observethe current time of another city, it is very troublesome and violatesthe principle of user's friendly.

As shown in FIG. 2, another conventional timepiece 2 with a time zonering 21 mounted on the outer rim of the dial 22 and an interior 24-hourrotating disc 23 mounted on the central portion of the dial 22 of thetimepiece 2 in the usual manner is illustrated. When the user travels toanother time zone city, the user has to adjust an hour hand 24 and aminute hand 25 to local time and then rotate the time zone ring 21 untilthe local time coincident with the local city name on the time zone ring21, so that the user can read the current time of the other cities forma 24-hour dial 23 coincident with the city name on the time zone ring21. However, those users, who need to travel city to city often, maystill feel very inconvenience to the necessity of adjusting the hourhand 24 and minute hand 25 corresponding to the local time every time.

A timepiece with simultaneous time display for at least two time zonesis disclosed in U.S. Pat. No. 5,323,363. It is convenience for travelerswho always travel between two cities only. However, such timepiece islimited to simultaneously display the time of two time zones only. Ifthe user travels to a third city, the user has to reset the timepieceagain and the setting procedure is very troublesome. Firstly, adjust thetime indicated by the hour and minute hands corresponding to a time zonecity in an usual manner, in which one is corresponding to another timezone city. Secondly, operate the time zone disc to display the name ofcity corresponding to the local time zone and, during this operation,the 24-hour disc is also driven in rotation synchronically with the timezone disc, but the time indicated by the numeral of the 24-hour disc, inthis stage, opposite the mark after the rotation of the time zone discgenerally does not correspond to the time indicated by the hour hand. Insuch a case, the two indications of time should be made to correspond,which is achieved by a third step of operating solely the 24-hour discin such manner that, the numeral coming opposite the mark corresponds tothe time indicated by the hour hand. Moreover, one has to take intoaccount whether the time indicated on the dial by the hour hand is a daytime or a night time.

An essential common unsolved problem of every conventional timepiecewith time zone ring, including the timepieces as mentioned above, isthat the city name inscriptions are inscribes on the time zone discradically that only the city name inscription at the 12 o'clock positionis in upright position. Accordingly, those city name inscriptionslocated on the lower portion of the time zone disc, i.e. the 3 o'clockto the 9 o'clock positions, are turned upside-down that increases thedifficulty of searching the desired city name by the user.

SUMMARY OF THE PRESENT INVENTION

It is a main object of the present invention to provide a time equipmentwith time zone mechanism which has a time zone disc being driven torotate automatically one revolution per 24 hours so as to enable one ofthe time zone city marks which represents a predetermined city to rotatesimultaneously, following the rotation of an hour hand of the timeequipment. Therefore, the user may simultaneously observe all thecurrent time of all the time zone city marks provided on the time zonedisc.

It is another object of the present invention to provide a timeequipment with time zone mechanism in which all the time zone city namesor symbols provided on the time zone disc are capable of maintaining inupright position during, the rotation of the time zone disc so as tofacilitate the reading of the time zone city names or symbols thereon.

It is still another object of the present invention to provide a timeequipment with time zone mechanism which permits the hour hand to bedriven to rotate independently for facilitating the setting procedure ofthe time equipment.

Accordingly, a time equipment with time zone mechanism of the presentinvention comprises a 24-hour dial, an hour hand and a minute handmounted for rotating above the dial, a movement for driving the hourhand to rotate one revolution per 24 hours and the minute hand to rotateone revolution per hour, a time zone mechanism, and a setting mechanismfor the time zone mechanism. The time zone mechanism comprises a timezone disc coaxially mounted adjacent to the dial and a driving devicefor driving the time zone disc to rotate one revolution per 24 hours.The time zone disc has an outer time zone ring portion disposing aroundthe periphery of the dial and providing with a plurality of time zonecity indicators arranged in the same order as the time zones. Thesetting, mechanism is adapted to rotate the time zone disc until one ofthe time zone city indicators representing a desired city of the timezones aligned with the hour hand so that the current time of the othertime zone city indicators on the time zone disc are capable of beingread simultaneously coincident with a plurality of corresponding hournumerals inscribed on the dial respectively.

The time equipment of the present invention further comprises amaintaining mechanism incorporated with the time zone mechanism, inwhich the time zone disc has a plurality of time zone openings and eachof the time zone indicators comprises an indicating city disc. Each ofthe indicating city discs has a corresponding time zone city or symbolinscribed thereon and is supported to dispose on the corresponding timezone opening during the rotation of the time zone disc by means of themaintaining mechanism. The maintaining mechanism is further adapted todrive the plurality of indicating city discs to rotate independently soas to enable the time zone city or symbol of each indicating city discmaintaining in upright position during the rotation of the time zonedisc.

The time equipment of the present invention further comprises an houraxle transmitting and setting device for enabling the hour hand to betransmitted to rotate one revolution per 24 hours by a minute axle whichis driven to rotate one means of the movement, and for permitting thehour hand to be driven to rotate independently for facilitating thesetting procedure of the time equipment.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a front view of a conventional timepiece with a time zone ringmounted thereon.

FIG. 2 is a front view of another conventional timepiece with a timezone ring mounted therein.

FIG. 3 front view of a time equipment having a 24-hour dial incorporatedwith a time zone disc according to a first preferred embodiment of thepresent invention.

FIG. 4 is a schematic sectional view illustrating a driving device ofthe time equipment according to the above first embodiment of thepresent invention.

FIG. 5 is a partial sectional front view illustrating the driving deviceincorporated with a setting mechanism of the time equipment according tothe above first embodiment of the present invention.

FIG. 6 is a front view of a time equipment having a 24-hour dialincorporated with a time zone disc which has a plurality of rotatingindicating city discs disposed on a plurality of time zone openingsformed on the time zone disc, according to a second preferred embodimentof the present invention.

FIG. 7 is a schematic partial sectional view illustrating a maintainingmechanism incorporated with the driving device of the time zonemechanism according to the above second embodiment of the presentinvention.

FIG. 8 is a geometrical drawing illustrating the relationship betweenthe time zone disc and a transmitting wheel of the above secondembodiment according to the present invention.

FIG. 9 is a schematic partial sectional view of a third preferredembodiment of the present invention, illustrating the driving device andthe maintaining mechanism.

FIG. 10 is a schematic partial sectional view of an alternative mode ofthe driving device incorporated with the maintaining mechanism accordingto the above third embodiment of the present invention.

FIG. 11A is a schematic partial sectional view illustrating an hour axletransmitting and setting device according to a fourth preferredembodiment of the present invention.

FIG. 11B is a perspective view of a transmitting unit of the hour axletransmitting and setting device according to the above fourth preferredembodiment of the present invention.

FIG. 12A is a schematic partial sectional view of a modification modeaccording to the above third preferred embodiment of the presentinvention, in which a specific setting mechanism incorporated with themaintaining mechanism in normal stage.

FIG. 12B is a schematic partial sectional view of the modification modeaccording to the above third embodiment of the present invention,illustrating the specific setting mechanism incorporated with themaintaining mechanism in time setting stage.

FIG. 12C is a schematic partial sectional view of the modification modeaccording to the above third embodiment of the present invention,illustrating the specific setting mechanism incorporating with themaintaining mechanism in time zone setting stage.

FIG. 13 is a schematic sectional view of a time equipment according to afifth preferred embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

Referring to FIGS. 3 to 5 of the drawings, a time equipment with timezone mechanism of the present invention comprises a 24-hour dial 30, anhour hand 41, a minute hand 42 and a second hand 43 mounted for rotatingabove the dial 30, a movement 40 for driving the hour hand 41 to rotateone revolution per 24 hours, the minute hand 42 to rotate one revolutionper hour and the second hand 43 to rotate one revolution per minute, atime zone mechanism 50 having a time zone disc 51 mounted adjacent tothe dial 30 and a driving device 52 for driving the time zone disc 51 torotate onerevolution per 24 hours, and a setting mechanism 60 for thetime zone mechanism 50 (as shown in FIG. 5).

The dial 30 has an hour sequence of numerals inscribed thereon andordered by increasing value from 1-24 which are arranged circularly andevenly spaced apart angularly, or two hour sequences of numerals 31inscribed thereon and ordered by increasing value from 1-12respectively. As shown in FIG. 3, the two hour sequences of numerals 31are arranged circularly and evenly spaced apart angularly, in which thefirst numeral "12" is inscribed in a top position, the second numeral"12" is inscribed in a bottom position, and the two numerals "6" areinscribed in a right and a left position. A minute portion 32 ispositioned in an outer rim of the dial 30 and inscribed with a sequenceof numerals ordered by increasing value from "1" to "60" which arearranged circularly and evenly spaced apart angularly with the numeral"60" inscribing in a top position and adjacent to the first numeral "12"of the hour sequence 31.

As shown in FIG. 3, a period portion 33 is provided on a central area ofthe dial 30 and is encircled by the hour sequences of numerals 31. Theperiod portion 33 has a central cross inscription 331 having a verticalline 331a extended from top to bottom and a horizontal line 331bextended from left to right, so as to divide the period portion 33 intofour sections 332, 333, 334, 335. On the top part of the vertical line331a, a "day" mark is inscribed. On the bottom part of the vertical line331a, a "night" mark is inscribed. Also, on the right part of thehorizontal line 331b, an "a.m." mark representing ante meridian isinscribed. On the left part of the horizontal line 331b, a "p.m." markrepresenting post meridianis inscribed. Furthermore, on the top left andright sections 332, 333 of the period portion 33, a "MORNING" mark andan "AFTERNOON" mark are inscribed in predetermined positionsrespectively. Also, on the bottom right and left sections 334, 335 ofthe period portion 33, an "EVENING" mark and a "NIGHT" mark areinscribed in predetermined positions respectively. Besides, the bottomright and left sections 334, 335 has a darker background color. Acircular sun mark 410 is affixed on the hour hand 41.

Referring to FIGS. 3 and 4, the time zone mechanism 50 is arranged in areceiving chamber C1 of a case C. The receiving chamber C1 is definedabove the movement 40 which is installed within the lower portion of thecase C. The time zone disc 51 of the time zone mechanism 50 is coaxiallysupported encircling the dial 30 by a supporting rim C2 provided in theupper periphery portion of the receiving chamber C1 of the case C inrotatable manner that a periphery time zone ring portion 511 formed atan outer rim portion of the time zone disc 51 is arranged to disposearound the periphery of the dial 30. The periphery time zone ringportion 511 of the time zone disc 51 has a plurality of time zone cityindicators 512 thereon which are a plurality of city name inscriptionsarranged in the same order as the time zones according to this firstembodiment, as shown in FIG. 3. The time zone disc 51 has a central hole513 having a diameter smaller than the diameter of the dial 30, whereinat least two supporting poles 301, 302 are extended from the bottom ofthe dial 30 to the bottom of the receiving chamber C1 in order tosupport the dial 30 in position.

The driving device 52 of this first embodiment comprises a driving gear521positioned in the receiving chamber C1 and mounted on an upperposition, underneath the dial, of an hour axle 411. The hour axle 411 isextended from the movement 40 upwards into the receiving chamber C1 anddrives the driving gear 521 to rotate simultaneously with the hour hand41 in one revolution per 24 hours. A first outer ratchet ring 53, havinga round sequence of outer ratchets 531 formed along an outer rimthereof, is coaxially protruded downwards from an outer periphery of thebottom surface of the time zone disc 51 within the receiving chamber C1.A secondinner driven gear ring 54, having a sequence of inner gear teeth541 formedalong an inner rim thereof, is coaxially protruded downwardsfrom an inner periphery of the bottom surface of the time zone disc 51within the receiving chamber C1. The driven gear ring 54 is engaged witha driving transmission gear 55, which is rotatably mounted in thereceiving chamber C1, by its inner gear teeth 541. A driven transmissiongear 56 is concentrically and integrally connected below the drivingtransmission gear 55 by an adjusting axle 57 within the receivingchamber C1, so that the driven transmission gear 56 and the drivingtransmission gear 55 are rotated simultaneously along the adjusting axle57. An idle gear 58 is mounted in a predetermined position in thereceiving chamber C1 that it isengaged with the driving gear 521 and thedriven transmission gear 56. Therefore, the time zone disc 51 is drivento rotate simultaneously with the driving gear 521 in one revolution per24 hours via the idle gear 58, the driven transmission gear 56, thedriving transmission gear 55, and thedriven gear ring 54.

Referring to FIG. 5, the setting mechanism 60 is adapted to drive thetime zone disc 51 to rotate independently until one of the time zonecity indicators 512, representing a desired city of the time zones,aligned with the hour hand 41 so that, the current time of the othertime zone city indicators 512 provided on the time zone ring portion 511can be readsimultaneously coincident with the corresponding hournumerals 31 inscribedon the dial 30 respectively.

The setting mechanism 60 according to the first embodiment comprises asetting member 61 pivotally mounted in the receiving chamber C1 by meansof a mounting axle 62 to enable rotational motion around the mountingaxle62. The setting member 61 comprises a pivoting part 611 mounted onthe mounting axle 62, a resilient pawl arm 612 extended from thepivoting part611 to the ratchet ring 53 and a resilient clutch arm 613extended from a lower portion of the pivoting part 611 in L-shape to theadjusting axle 57. The end of the pawl arm 612 provides a ratchet pawl614 engaging against one of the ratchets 531 of the ratchet ring 53. Theend of the clutch arm 613 is connected with the adjusting axle 57. Thesetting mechanism 60 further comprises a pusher member 63 disposedadjacent to thesetting member 61.

The operation of the setting mechanism 60 is ensured by the applicationof a pushing pressure in the direction of arrow F, as shown in FIG. 5,against the pusher member 63 which then presses the clutch arm 613 ofthe setting member 61 to rotate in anti-clockwise direction around themounting axle 62 synchronously. Therefore, the clutch arm 613 is pressedto pull the driving transmission gear 55 to disengage with the drivengearring 54 of the time zone disc 51 temporary, so that the rotation ofthe time zone disc 51 stops due to the release of transmission. At thesame time, the pawl arm 612 is driven to rotate anti-clockwisesimultaneously, so that the ratchet pawl 614 thereof turns the ratchetring 53 as well as the time zone disc 51 to rotate for one ratchet toothdisplacement. When the pressure applied to the pusher member 63releases, the pulling force to the driving transmission gear 55 isreleased and the driving transmission gear 55 re-engages with the drivengear ring 54 of the time zone disc 51, so that the time zone disc 51 isdriven to rotate in one revolution per 24 hours by the driving device 52again. Accordingly, the user can rotate the time zone disc 51 solelyuntil one of the time zone city indicators 512, representing a desiredcity of the time zones, aligned with the hour hand 41 by repeatedlyapplying a predetermined number of pushing actions onto the pushermember 63.

In accordance with the above disclosure of the present invention, thesetting operation of the present invention to a current local time issimple and convenience. Initially, set the time equipment to currentlocaltime by setting the positions of the hour hand 41 and minute hand42, in anusual manner, to indicate the time corresponding to the city.In this operation, the time zone disc 51 is also driven in rotationsynchronicallywith the hour hand 41 but the time, which is indicated bythe hour hand 41 opposite the time zone city indicator 512 after therotation of the time zone disc 51, generally does not correspond to thetime of that time zone city indicator 512. Thereafter, the time zonedisc 51 is operated solely to rotate by means of the pusher member 63until the desired city name or symbol indicated by the desired time zonecity indicator 512 is rotated toa position that aligns with the hourhand 41. Therefore, the current time of the desired city is indicated bythe hour hand 41 and the current time of other time zone cities providedon the time zone ring portion 511 can also be read simultaneouslycoincident with the corresponding hour numerals 31 inscribed on the dial30 respectively.

Referring to FIGS. 6 and 7, a second preferred embodiment which is amodification of the above first embodiment of the present invention isillustrated. In this second embodiment, the time equipment of thepresent invention further comprises a maintaining mechanism 70, as shownin FIG. 7, incorporated with the time zone mechanism 50. The time zonedisc 51 is driven to rotate in one revolution per 24 hours by thedriving device 52 as in the above first embodiment. However, accordingto this second embodiment, the first outer ratchet ring 53 and thedriver gear ring 54 are disposed apart to form a circular portiontherebetween. The time zone disc 51 of this second embodiment has aplurality of time zone openings 513 arranged circularly and uniformlyspaced apart angularly on the circular portion. Moreover, in accordancewith the second embodiment, eachof the time zone city indicators 512 ofthe time zone mechanism 50 comprises an indicating city disc 512', whichhas a corresponding time zone city or symbol inscribed thereon, and issupported to dispose on (or above, or underneath) the corresponding timezone opening 513 during the rotation of the time zone disc 51 by meansof the maintaining mechanism 70. The maintaining mechanism 70 is adaptedto drive the plurality of indicating city discs 512' to rotateindependently so as to enable the time zone city or symbol on eachindicating city disc 512' maintaining in upright position during therotation of the time zone disc 51.

As shown in FIG. 8, a geometrical drawing showing the operational theoryofthe maintaining mechanism 70 is illustrated. Two circles D and Ehaving same diameter are disposed with their centers d and e having ahorizontal displacement DE. A plurality of marks, such as A, A', A" andB, B', B", etc., are arranged circularly and uniformly spaced apartangularly on the periphery of the two circles D and E respectively,wherein the distance lines AB, A'B' and A"B" between the marks A and B,A' and B', and A" and B" are equal to the displacement DE. When thecircle D and circle E rotatesimultaneously in the same speed, forexample one revolution per 24 hours, every distance line AB, A'B' orA"B" between the marks A and B, A' and B',or A" and B" will bemaintained in horizontal position. Such that, if the circle E is a firstrotating disc and the marks B, B' and B" are pivoting axles rotatablymounted on the periphery of the first rotating disc E. Thecircle D is asecond rotating disc and the marks A, A' and A" are indicating discshaving predetermined inscriptions inscribed thereon respectively andmounted on the periphery of the second rotating disc D. The distancelines AB, A'B' and A"B" are a plurality of connecting rods connectingbetween the indicating discs A, A' and A" and the pivoting axesB, B' andB". The indicating disc A, A' and A" and the inscriptions thereoncan bemaintained in upright position during the simultaneous rotation of thefirst rotating disc E and the second rotating disc D.

The maintaining mechanism 70, as shown in FIG. 7, comprises a drivingwheel71 and a plurality of pivoting axles 72 disposed in the receivingchamber C1. The driving wheel 71 has a central hole 711 and a supportingring 712 protruded downwardly. An inner circular surface of thesupporting ring 712provides a driven ring gear 713. The bottom surfaceof the receiving chamber C1 provides a circular groove 714 to receive abottom end of the supporting ring 712 for supporting the driving wheel71 in rotatable manner. The center of the driving wheel 71 as well asthe center of the circular groove 714 are adjacent to the center of thetime zone disc 51 aswell as the hour axle 411 to define a distance Ltherebetween. A first transmission gear 73 disposed in the receivingchamber C1 is engaged with the driven ring gear 713. A secondtransmission gear 74 is engaged with the driving gear 521 mounted on thehour axle 411 and the first transmission gear 73, so that the drivingwheel 71 is driven by the driving gear 521 via the first and secondtransmission gears 73 and 74 to rotate simultaneously with the time zonedisc 51, i.e. one revolution per 24 hours.

Each pivoting axle 72 has a first end bending upwards to form a verticaltop end portion 721 to affix to the bottom center of the correspondingcity disc 512' and a second end bending downward to form a verticalbottomend portion 722 to pivotally mounted to a predetermined peripheryposition of the driving wheel 71. Therefore, the plurality of pivotingaxles 72 arerotatably mounted to the outer periphery of the drivingwheel 71 circularlyand uniformly spaced apart angularly so as toposition the plurality of indicating city discs 512' to thecorresponding time zone openings 513 of the time zone disc 51respectively.

Accordingly, when the time zone disc 51 and the driving wheel 71 aredrivenby the driving gear 521 to rotate simultaneously in one revolutionper 24 hours, the indicating city discs 512' linked to the driving wheel71 rotate respectively following the rotation of the time zone disc 51along the hour axle 411. Therefore, each indicating city disc 512'remains in upright position by self rotation around the bottom endportion 722 of thecorresponding pivoting axle 72, following the rotationof the driving wheel71, so that the inscription of city name inscribedon the indicating city disc 512' can be maintained in upright positionduring the rotation of thetime zone disc 51 for facilitating the readingof the time zone city name thereon, even the indicating city disc 512'being driven to a corresponding bottom position, for example the "12a.m." position, of the dial 30.

Furthermore, since the indicating city discs 512' according to thepresent second embodiment can be maintained in upright position duringthe rotation of the time zone disc 51, the city names can be replacedrespectively by city symbols, such as the specified drawingsrepresenting the cities, so as to further facilitate the distinction ofvarious time zone cities and provide an innovating time zone discappearance.

Referring to FIGS. 9 and 10, a third embodiment of the present inventionisillustrated, which is another modification mode of the above disclosedsecond embodiment and can be specified to construct as a clock. In thisthird embodiment, the dial 30 is printed on a transparent disc 300 thatthe outer periphery portion of the transparent disc 300 is remainedtransparent for the observation of the indicating city discs 512'. Thetime zone disc 51 is disposed underneath the transparent disc 300 insidethe receiving chamber C1 and integrally mounted on the hour axle 411extending from the movement of the time equipment. A second chamber C3is provided below the receiving chamber C1.

The periphery of the time zone disc 51 provides a plurality of time zoneopenings 513 arranging circularly and uniformly spaced apart angularlyandhaving a diameter slightly larger than the diameter of the top endportion 721 of each pivoting axle 72. The top end portions 721 of thepivoting axles 72 are upwardly penetrated therethrough the correspondingtime zone openings 513 and affixed to the bottom surfaces of theindicating city discs 512' respectively, so as to support the indicatingcity discs 512' above the time zone openings 513 respectively.

Referring to FIG. 9 of the third embodiment, the driving wheel 71generallyhas the same configuration of the above second embodiment andis rotatably mounted in the receiving chamber C1 in the manner asmentioned in the second embodiment. However, the driven ring gear 713 isformed on the outer periphery surface of the supporting ring 712 insteadof the inner circular surface of the supporting ring 712. Moreover, therotation of thedriving wheel 71 is driven by means of a transmissiondevice 75 in accordance with this third embodiment. In this thirdembodiment, the transmission device 75 of the maintaining mechanism 70comprises a transmission driving gear 751 integrally mounted on the houraxle 411 and disposed in the second chamber C3, a first idle gear 752rotatably mountedin the receiving chamber C1 and engaged with the drivenring gear 713 and asecond idle gear 753, a driven transmission gear 754rotatably mounted in the second chamber C3 and engaged with thetransmission driving gear 751, and a driving transmission gear 755 whichis concentrically mounted above the driven transmission gear 754 by atransmission axle 756 so as to dispose in the receiving chamber C1 forengaging with the second idle gear753. Therefore, the driving wheel 71is adapted to be driven to rotate in one revolution per 24 hours bymeans of the transmission driving gear 751 via the first idle gear 752,the second idle gear 753, the driven transmission gear 754, and thedriving transmission gear 755.

Referring to FIG. 10, an alternative mode of the third embodiment isillustrated. In this mode, the driving ring gear 713 is formed on itsouter periphery rim instead of the inner circular surface of thesupporting ring 712. The transmission device 75 of this alternative modealso comprises a transmission driving gear 751' integrally mounted onthe hour axle 411 and disposed in the second chamber C3, a first idlegear 752' engaged with the transmission driving gear 751' and a secondidle gear 753', a driven transmission gear 754' engaged with the secondidle gear 753', and a driving transmission gear 755' which isconcentrically mounted above the driven transmission gear 754' by atransmission axle 756' so as to dispose in the receiving chamber C1 forengaging with the driven ring gear 713'. Therefore, the driving wheel 71is adapted to be driven to rotate in one revolution per 24 hours bymeans of the transmission driving gear 751' via the first idle gear752', the second idle gear 753', the driven transmission gear 754', andthe driving transmission gear 755'.

Referring to FIGS. 11A and 11B, a fourth preferred embodiment of thepresent invention is illustrated, which is a modification mode of theabove first, second or third embodiment by further incorporating with anhour axle transmitting and setting device 90 for enabling the hour axle411 to be transmitted to rotate one revolution per 24 hours by a minuteaxle 421 which is connected with the minute hand 42 above the dial 30and driven to rotate one revolution per hour by means of the movement40, and permitting the hour axle 411 to be driven to rotateindependently so as tofacilitate the setting procedure of the timeequipment of the present invention as disclosed above when the usertravels from the local city to another city.

As shown in FIG. 11A, the hour axle transmitting and setting device 90is installed in a transmitting chamber C4 provided in an upper portionof themovement 40 when it is incorporated with the above first, secondor third embodiment as shown in FIGS. 4, 7, 9 or 10, in which thetransmitting chamber C4 of the movement 40 has a bottom surface C41which central portion has a hollow mounting shaft C42. The minute axle421, which is extended from the movement 40 through the transmittingchamber C4 by rotatably penetrating the mounting shaft C42, has a basegear 422 providedat a position above the mounting shaft C42 in thetransmitting chamber C4. The hour axle transmitting and setting device90 comprises a transmitting unit 91, an hour axle driven wheel 92integrally connected to the base bottom of the hour axle 411, and asetting unit 93.

As shown in FIG. 11B, the transmitting unit 91 comprises a main gear 911which has a central hole 912 and C-shaped connecting shaft 913 extendingupwards from the circumferential boundary of the central hole 912. Themain gear 911 is rotatably mounted on the mounting shaft C42 in thetransmitting chamber C4, as shown in FIG. 11A. The transmitting unit 91further comprises a gear unit 914 which comprises a bottom gear 915 anda top gear 916 concentrically and integrally formed on the bottom gear915. As shown in FIGS. 11A and 11B, the gear unit 914 is rotatablymounted on the main gear 911 in a position opposing to an opened side9131 of the C-shaped connecting shaft 913, so that the bottom gear 915of the gear unit 914 is adapted to engage with the base gear 422 of theminute axle 421.

As shown in FIG. 11A, the hour axle driven wheel 92 has an hour gear 921connected to the bottom of the hour axle 411 and a circular connectingrecess 922 formed thereunder for concentrically and rotatably mounted onthe C-shaped connecting shaft 913 in such a manner that the hour gear921 of the hour axle driven wheel 92 is engaged with the top gear 916 ofthe gear unit 914 of the transmitting unit 91. Moreover, the gear numberof the base gear 422, the bottom gear 915, the top gear 916, and thehour gear 921 are predetermined in a specific proportion for enablingthe minute axle 421 to rotate one revolution while the hour axle 411rotates just 1/24 revolution. Therefore, the hour axle 411 is driven torotate onerevolution per 24 hours by the top gear 916 of the gear unit914, in which the bottom gear 915 of the gear unit 914 is driven torotate by the base gear 422 of the rotating minute axle 421 which isdriven to rotate one revolution per hour by the movement 40. At thatstage, the main gear 911 is remained still.

As shown in FIG. 11A, the setting unit 93, which is rotatably mounted onthe bottom surface C41 of the transmitting chamber C4, comprises asettinggear 931 engaged with the main gear 911 of the transmitting unit91 and a setting wheel 932 coaxially and integrally connected on thesetting gear 931 for driving the setting gear 931 to rotate. At least aportion of the setting wheel 932 is exposed to outside of the timeequipment. Therefore, by turning the setting wheel 932 can drive thesetting gear 931 to rotate and so does the main gear 911, so that thehour axle 411, as well as the hour hand 41 connected with the hour axle411, are driven to rotate simultaneously and independently.

Since the current time difference between any two time zone cities isconstant, the time setting operation becomes more convenience byincorporating with the hour axle transmitting and setting device 90 asdisclosed above. Once the time equipment of the present invention is setto the current time of the local city, the user can alternativelyobserve the current time of another city inscribed on the time zone disc51 by turning the setting wheel 932 to rotate the hour hand 41independently to coincident with the desired city. Thus the timeindicating by the hour hand 41, minute hand 42 and second hand 43 tellsthe exact current time ofthat desired city. In the other words, when theuser travels from a home city to another city listed on the time zonedisc 51, the user can simply turn the setting wheel 932 to drive thehour hand 41 independently to coincident with that desired city so as toreset the time indicating by the hour, minute and second hands 41, 42,43 on the dial 30 to the currenttime of that city from the home citytime.

As shown in FIGS. 12A, 12B and 12C, a modification mode of the abovethird embodiment is illustrated. The dial 30 is printed on a transparentdisc 300 that an outer periphery portion of the transparent disc 300 isremained transparent for the observation of the indicating city discs512'. The time zone disc 51 is disposed underneath the transparent disc300 inside the receiving chamber C1 and integrally mounted on a hollowdriving axle 500 to which the hour axle 411 extending from the movement40of the time equipment is concentrically penetrated through toconnected with the hour hand 41 above the dial 30. The upper end of thedriving axle500 is upwardly extended into the receiving chamber C1 andthe bottom end of the driving axle 500 is downwardly extended into asecond chamber C3 which is provided below the receiving chamber C1 andabove the movement 40. The driving device 52 of this modificationfurther comprises a clutch means 59 and a spring 590. The clutch means59 is mounted on the hour axle411 inside the second receiving chamber C3in permitting axial displacementmanner. The spring 590 is disposedbetween the bottom surface of the clutchmeans 59 and the bottom surfaceC31 of the second chamber C3. The spring 590 presses the clutch means 59upwards for engaging the hour axle 411 with the driving axle 500 so thatthe driving axle 500 is driven to rotatesimultaneously by the hour axle411 so as to drive the time zone disc 51 torotate simultaneously for onerevolution in 24 hours.

The clutch means 59 provided on the top thereof a central engaging tube591which has a thickness equal to the clearance formed between the houraxle 411 and the driving axle 500. Therefore, when the engaging tube 591is pressed upwards to insert into the bottom end of the driving axle 500by the spring 590, an outer and inner coarse surfaces of the engagingtube 591 are engaged with an outer surface of the hour axle 411 and aninner surface of the bottom end of the driving axle 500 so as to couplethe houraxle 411 and the driving axle 500 integrally for driving thedriving axle 500 to rotate simultaneously by the hour axle 411.

The time equipment further comprises a setting mechanism 80. The clutchmeans 59 further comprises a periphery clutch gear 592 and a stop rim593 protruded at the bottom end of the clutch means 59. The settingmechanism 80 comprises a setting pole 81 having a top portion 811extended into the receiving chamber C1, a middle portion 812 extendedthrough the second chamber C3 and a bottom portion 813 extended outsideof the time equipmentto affix a setting button 82. A first setting gear83 is affixed to the topend of the top portion 811 and a second settinggear 84 is affixed to a predetermined position of the middle portion812. Normally, the spring 590supports and presses the clutch means 59 innormal position, as shown in FIG. 12A. In this normal position, thefirst setting gear 83 and the second setting gear 84 do not engaged withthe driven ring gear 713 nor the clutch gear 592 respectively.

As shown in FIG. 12B, when the time indicating by the hour hand 41 andminute hand 42 is required to re-adjust, pull the setting pole 81outward until the second setting gear 84 is engaged with the clutch gear592 and stopped by the stop rim 593. At this stage, the first settinggear 83 is still remained not to engaged with the driven ring gear 713of the drivingwheel 71. Therefore, turning of the button 82 to rotatethe setting pole 81can drive the clutch gear 592, as well as the drivingaxle 500 and the houraxle 411, to rotate simultaneously by means of thesecond setting gear 84, so as to rotate the hour hand 41 and the minutehand 42 to the current time.

As shown in FIG. 12C, the time zone disc 51 can be operated solely torotate until the desired city name or symbol indicated by the desiredindicating city disc 512' is rotated to a position that aligns with thehour hand 41. Such time zone adjustment can be operated by furtherpullingthe setting pole 81 further outward, so as to pull the clutchmeans 59 to move downward and press against the spring 590 until theengaging tube 591of the clutch means 59 is withdrawn from the drivingaxle 500 and the firstsetting gear 83 is engaged with the driving ringgear 713. At that stage, the engaging tube 591 is also disengaged withthe hour axle 411 so that the driving axle 500 is disengaged with thehour axle 411. The driving of time zone disc 51 and the driving wheel 71by the hour axle 411 is then released and the time zone disc 51 becomesfree of rotation. Turning of the button 82 at this moment can drive thedriving wheel 71 to rotate by means of the first setting gear 83, sothat the time zone disc 51 can alsobe driven to rotate simultaneously bymeans of the plurality of pivoting axles 72. Therefore, the current timeof the desired city is indicated by the hour hand 41 and the currenttime of other time zone cities provided on the time zone disc 51 can beread simultaneously coincident with the corresponding hour numeralsinscribed on the dial 30 respectively.

Referring to FIG. 13, a fifth embodiment of the present invention isillustrated. The time zone mechanism 50' of the time equipment, which isaclock, comprises a time zone disc 51' disposed in a receiving chamberC1' below a dial 30' which is printed on the central portion of atransparent disc 300'. The time zone disc 51' is integrally mounted onan hour axle 411' below the dial 30' in the receiving chamber C1' andhas an outer driven gear 511' provided at an outer circumference of thetime zone disc 51'. On the outer periphery portion of the time zone disc51', a pluralityof time zone city indicators 512" are providedcircularly and uniformly spaced apart angularly. The plurality of timezone city indicators 512" are a plurality of inscriptions of city nameor symbol arranged in the same order as the time zones. The hour axle411' is extended from a movement 40' upwards through a second chamberC3', which is positioned between the receiving chamber C1' and themovement 40', and the receiving chamber C1' for connecting with an hourhand 41' above the dial 30' and driving the hour hand 41' to rotate forone revolution per 24 hours.

The time zone mechanism 50' further comprises a driving device 52'. Thedriving device 52' comprises a driver gear 53', which is integrallymounted on the hour axle 411' in the second receiving chamber C3',having the same diameter of the time zone disc 51'. The driving device52' further comprises a transmission means 54' which has a hollow polebody 541', atop transmission gear 542' engaged with the driven gear 511'of thetime zone disc 51' and a bottom transmission gear 543' engagedwith the driver gear 53'.

On an outer periphery portion of the time zone disc 51', a plurality oftime zone openings 52' is provided and disposed corresponding to thelocation of the plurality of time zone city indicators 512"respectively. The time zone indicators are a plurality of indicatingcity discs 512" mounted above the time zone openings 52' respectively inaccordance with this fifth embodiment.

The time equipment of this fifth embodiment further comprises amaintainingmechanism 70' rotatably disposed in the receiving chamberC1'. The maintaining mechanism 70' comprises a driving wheel 71' and aplurality ofpivoting axles 72'. The driving wheel 71' has a central hole711' and a supporting ring 712' protruded downwards from its bottomsurface. A bottomsurface of the receiving chamber C1' provides acircular groove 714' to receive the bottom end of the supporting ring712' for supporting the driving wheel 71' in rotatable manner. Thecenter of the driving wheel 71'as well as the center of the circulargroove 714' are adjacent to the center of the time zone disc 51' as wellas the hour axle 411' to define adistance L' therebetween.

Each pivoting axle 72' has a first end bending upward to form a verticaltop end portion 721' which is rotatably penetrated through the time zoneopenings 52' respectively and affixed to the bottom center of thecorresponding indicating city disc 512", and a second end bendingdownwardto form a vertical bottom end portion 722' to pivotally mountedto a predetermined periphery position of the driving wheel 71'.Therefore, the plurality of pivoting axles 72' are rotatably mounted toan outer periphery of the driving wheel 71' circularly and uniformlyspaced apart angularly so as to position the plurality of indicatingcity discs 512" corresponding to the time zone openings 52' of the timezone disc 51' respectively.

Accordingly, when the time zone disc 51' and the driving wheel 71' aredriven by the driver gear 53' to rotate simultaneously in one revolutionper 24 hours, the indicating city discs 512" linked to the driving wheel71' rotate respectively following the rotation of the time zone disc 51'around the hour axle 411'. However, each indicating city disc 512"remainsin upright position by self rotation around the bottom endportion 722' of the corresponding pivoting axle 72' following therotation of the driving disc 71', so that the inscription of city nameinscribed on each indicating city disc 512" can be maintained in uprightposition during therotation of the time zone disc 51', so as tofacilitate the reading of the time zone city name thereon even theindicating city disc 512" is rotated to a corresponding bottom positionof the dial 30', for example the "12 a.m." position.

The time equipment of this fifth embodiment further comprises a settingmechanism 80'. The setting mechanism 80' comprises a setting pole 81'rotatably penetrating through the hollow pole body 541' of thetransmission means 54'. The setting pole 81' has a top portion 811'extended into the receiving chamber C1', a middle portion 812' extendedthrough the second chamber C3' and a bottom portion 813' extendedoutside of the time equipment to affix a setting button 82'. A firstsetting gear 83' is affixed to the top end of the top portion 811' and asecond settinggear 84' is affixed to a predetermined position of themiddle portion 812'.The bottom portion 813' of the setting pole 81'further provides three stepgrooves 814', 815' and 816'. The settingmechanism 80' further comprises a holding means 85' adapted toselectively engage with one of the step grooves 814', 815', 816'.

In normal stage, the holding means 85' is engaged with the middle stepgroove 815' and, at that moment, the first setting gear 83' and thesecondsetting gear 84' do not engaged with the driven gear 511' of thetime zone disc 51' nor the driver gear 53' respectively. Therefore, thetime zone disc 51' is driven to rotate simultaneously by the driver gear53' via thedriving device 54'.

When the setting pole 81' of the setting mechanism 80' is pushed inwardsbypressing the setting button 82', the holding means 85' engages withthe lower step groove 816'. In this stage, the top and bottomtransmission gears 542', 543' are disengaged with the driven gear 511'and the driver gear 53' respectively, and that the second setting gear84' is engaged with the driver gear 53 while the first setting gear 83'remains disengaged with driven gear 511' of the time zone disc 51'.Therefore, theuser can rotate the hour axle 411' by turning the settingbutton 82' so as to adjust the current time indicating by the hour hand41'.

When the setting pole 81' of the setting mechanism 80' is pulled outwardbypulling the setting button 82', the holding means 85' engages with theupper step groove 814'. In this stage, the top and bottom transmissiongears 542', 543' are disengaged with the driven gear 511' and the drivergear 53' respectively, and that the first setting gear 83' is engagedwiththe driven gear 511' of the time zone disc 51' while the secondsetting gear 84' remains disengaged with the driver gear 53', so thatthe user canrotate the time zone disc 51' by turning the setting button82' to adjust the desired indicating city disc 512" coincident with thehour hand 41'.

In accordance with the embodiments described above, the time equipmentof the present invention provides a time zone disc rotatingautomatically onerevolution per 24 hours so that one of the time zonecity marks, which represents a predetermined city, is able to rotatesimultaneously to follow the rotation of an hour hand of the timeequipment. Therefore, the user may simultaneously observe all thecurrent time of all the time zone city marks provided on the time zonedisc. Moreover, in the second, third,fourth, and fifth embodiments, allthe time zone city names or symbols of the time zone disc are capable ofmaintaining in upright position during the rotation of the time zonedisc so as to facilitate the reading of the time zone city names orsymbols thereon.

With the invention thus explained, it is obvious to those skilled in theart that various modifications and variations can be made withoutdeparting from the scope and spirit of the present invention. It istherefore intended that this invention be limited only as in theappended claims.

I claim:
 1. A time equipment, comprisinga 24-hour dial having aplurality of hour numerals inscribed thereon; an hour hand and a minutehand mounted for rotating above said dial; a movement for driving saidhour hand to rotate one revolution per 24 hours and said minute hand torotate one revolution per hour; a time zone mechanism comprising a timezone disc rotatably and coaxially mounted adjacent to said dial, saidtime zone mechanism further comprising a driving device for driving saidtime zone disc to rotate one revolution per 24 hours, and that said timezone disc of said time zone mechanism has an outer time zone ringportion which is disposed around the periphery of said dial and providedwith a plurality of time zone city indicators arranging in apredetermined order; a setting mechanism for said time zone mechanism,wherein said setting mechanism is adapted to drive said time zone discto rotate independently until one of said time zone city indicators isaligned with said hour hand, so that the current time of said other timezone city indicators are capable of being read simultaneously coincidentwith said plurality of corresponding hour numerals inscribed on saiddial respectively; and a maintaining mechanism incorporated with thetime zone mechanism, in which said time zone disc has a plurality oftime zone openings arranged circularly and uniformly spaced apartangularly, each of said time zone city indicators comprising anindicating city disc which has a corresponding time zone city inscribedthereon and is supported to dispose on said corresponding time zoneopening by means of said maintaining mechanism, and that saidmaintaining mechanism is adapted to drive said plurality of indicatingcity discs to rotate independently so as to enable said indicating citydiscs maintaining in upright position respectively during the rotationof said time zone disc.
 2. A time equipment, as recited in claim 1, inwhich said maintaining mechanism comprises a driving wheel, which isdriven to rotate in one revolution per 24 hours, having a central holeand a supporting ring protruded from a bottom surface of said drivingwheel for mounting said driving wheel in said receiving chamber inrotatable manner, and that a center of said driving wheel is adjacent tosaid time zone disc's center to define a predetermined distancetherebetween, moreover, said maintaining mechanism further comprising aplurality of pivoting axles, each of said pivoting axles having a firstend affixed to said corresponding indicating city disc and a second endpivotally mounted to a predetermined periphery position of said drivingwheel, so that said plurality of pivoting axles are rotatably mounted tosaid outer periphery of said driving wheel circularly and uniformlyspaced apart angularly so as to position said plurality of city discscorresponding to said time zone openings of said time zone discrespectively, wherein a distance between said first end and said secondend of each said pivoting axle is equal to said predetermined distancebetween said driving wheel's center and said time zone disc's center. 3.A time equipment, as recited in claim 2, in which said first end of eachsaid pivoting axle is bent upwards to form a vertical top end portion toaffix to a center of said bottom surface of said corresponding city discand said second end of each said pivoting axle is bent downwards to forma vertical bottom end portion to pivotally mount to said predeterminedperiphery position of said driving wheel,.
 4. A time equipment, asrecited in claim 3, in which a bottom surface of said receiving chamberprovides a circular groove to receive a bottom end of said supportingring for supporting said driving wheel in rotatable manner.
 5. A timeequipment, as recited in claim 1, in which said time zone disc of saidtime zone mechanism is disposed in a receiving chamber below said dialwhich is printed on a central portion of a transparent disc, and thatsaid time zone disc is integrally mounted on an hour axle in saidreceiving chamber and has an outer driven gear provided at an outercircumference of said time zone disc, wherein on an outer peripheryportion of said time zone disc, a plurality of time zone city indicatorsare provided circularly and uniformly spaced apart angularly, and thatsaid hour axle is extended from said movement upwards through a secondchamber positioned between said receiving chamber and said movement andsaid receiving chamber for connecting with said hour hand above saiddial, and that said driving device of said time zone mechanism comprisesa driver gear and a transmission means, said driver gear beingintegrally mounted on said hour axle in said second chamber and has adiameter equal to that of said time zone disc, and that saidtransmission means has a hollow pole body, a top transmission gearengaged with said driven gear of said time zone disc, and a bottomtransmission gear engaged with said driver gear, and that on an outerperiphery portion of said time zone disc, a plurality of time zoneopenings is provided and disposed corresponding to the location of saidplurality of time zone city indicators respectively, and that said timezone city indicators comprises a plurality of indicating city discsmounted above said time zone openings respectively, and that saidmaintaining mechanism which is rotatably disposed in said receivingchamber comprises a driving wheel and a plurality of pivoting axles, andthat said driving wheel has a central hole and a supporting ringprotruded downwards from its bottom surface, a bottom surface of saidreceiving chamber providing a circular groove to receive a bottom end ofsaid supporting ring for supporting said driving wheel in rotatablemanner, wherein a center of said driving wheel is adjacent to a centerof said time zone disc to define a predetermined distance therebetween,and that each of said pivoting axles has a first end and a second end,said first end being bent upward to form a vertical top end portionwhich is rotatably penetrated through said corresponding time zoneopening and affixed to a bottom center of said corresponding indicatingcity disc, said second end being bent downward to form a vertical bottomend portion to pivotally mounted to a predetermined periphery positionof said driving wheel, wherein a distance between said first end andsaid second end of each said pivoting axle is equal to saidpredetermined distance between said driving wheel's center and said timezone disc's center, and that said plurality of pivoting axles arerotatably mounted to an outer periphery of said driving wheel circularlyand uniformly spaced apart angularly so as to position said plurality ofindicating city discs corresponding to said time zone openings of saidtime zone disc respectively, thereby when said time zone disc and saiddriving wheel are driven by said driver gear to rotate simultaneously inone revolution per 24 hours, said indicating city discs linked to saiddriving wheel rotate respectively following said rotation of said timezone disc around said hour axle, in order to maintain each indicatingcity disc in upright position by self rotation around said bottom endportion of said corresponding pivoting axle following said rotation ofsaid driving disc.
 6. A time equipment, as recited in claim 5, in whichsaid setting mechanism comprises a setting pole rotatably penetratingthrough said hollow pole body of said transmission means, said settingpole having a top portion extended into said receiving chamber, a middleportion extended through said second receiving chamber, and a bottomportion extended outside of said time equipment to affix a settingbutton, and that a first setting gear is affixed to a top end of saidtop portion and a second setting gear is affixed to a predeterminedposition of said middle portion, moreover, a bottom portion of saidsetting pole further providing three step grooves, and that said settingmechanism further comprises a holding means adapted to selectivelyengage with one of said step grooves; wherein in normal stage, when saidholding means is engaged with said middle step groove and said firstsetting gear, said second setting gear do not engaged with said drivengear of said time zone disc and said driver gear respectively, so thatsaid time zone disc is driven to rotate simultaneously by said drivergear via said driving device; wherein when said setting pole of saidsetting mechanism is pushed inwards by pressing said setting button,said holding means engages with said lower step groove and said top andbottom transmission gears are disengaged with said driven gear and saiddriver gear respectively, and that said second setting gear is engagedwith said driver gear while said first setting gear remains disengagedwith driven gear of said time zone disc, so that said hour axle iscapable of rotating by turning said setting button to adjust a currenttime indicating by said hour hand; wherein when said setting pole ofsaid setting mechanism is pulled outwards by pulling said settingbutton, said holding means engages with said upper step groove, and thatsaid top and bottom transmission gears are disengaged with said drivengear and said driver gear respectively, and that said first setting gearis engaged with said driven gear of said time zone disc while saidsecond setting gear remains disengaged with said driver gear, so thatsaid time zone disc is capable of rotating rotated by turning saidsetting button to adjust one of said indicating city disc coincidentwith said hour hand.
 7. A time equipment, as recited in claim 6, inwhich said dial has two hour sequences of numerals which are ordered byincreasing value from 1-12 inscribed thereon respectively and arrangedcircularly and evenly spaced apart angularly, wherein said first numeral"12" is inscribed in a top position, said second numeral "12" isinscribed in a bottom position, and said two numerals "6" are inscribedin a right and a left position, a minute portion which is positioned inan outer rim of said dial and inscribed with a sequence of numeralsordered by increasing value from "1" to "60" which are arrangedcircularly and evenly spaced apart angularly with said numeral "60"inscribing in a top position adjacent to said first numeral "12" of saidhour sequence, said dial further having a period portion which isprovided on a central area of said dial and encircled by said hoursequences of numerals, wherein said period portion has a central crossinscription having a vertical line extended from top to bottom and ahorizontal line extended from left to right so as to divide said periodportion into four sections, a "day" mark being inscribed on a top partof said vertical line, a "night" mark being inscribed on a bottom partof said vertical line, an "a.m." mark representing ante meridian beinginscribed on a right part of said horizontal line, a "p.m." markrepresenting post meridian being inscribed on a left part of saidhorizontal line, a "MORNING" mark and an "AFTERNOON" mark beinginscribed in predetermined positions on a top left and right sections ofsaid portion respectively, an "EVENING" mark and a "NIGHT" mark beinginscribed in predetermined positions on a bottom right and left sectionsof said period portion respectively, furthermore, said bottom right andleft sections having a dark background color and a circle sun mark beingaffixed on said hour hand.